油气地质

川中潼南地区须家河组二段高分辨率层序地层学研究

  • 陈可洋 ,
  • 杨微 ,
  • 吴清岭 ,
  • 范兴才 ,
  • 李来林 ,
  • 刘振宽
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  • 1.四川省煤炭设计研究院,四川成都310061; 2.中国矿业大学资源与地球科学学院,江苏徐州221008
刘小亮(1984-),男,硕士,主要从事层序地层学方面的研究工作。 地址:(650051)云南省昆明市盘龙区东风东路 36 号建工大厦1508。 E-mail:liuxl479@163.com

网络出版日期: 2013-02-20

基金资助

国家重点基础研究发展计划“973”项目“中低丰度天然气藏大面积成藏机理与有效开发的基础研究”(编号:2007CB209504)资助

High resolution sequence stratigraphy of the second member of Xujiahe Formation in Tongnan area, central Sichuan Basin

  • CHEN Keyang ,
  • YANG Wei ,
  • WU Qingling ,
  • FAN Xingcai ,
  • LI Lailin ,
  • LIU Zhenkuan
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  • 1. Coal Design and Research Institute in Sichuan Province, Chengdu 310061, China; 2. School of Resource and Earth Science, China University of Mining & Technology, Xuzhou 221008, China

Online published: 2013-02-20

摘要

以沉积学和高分辨率层序地层学理论为指导,利用钻井、测井及露头剖面等资料,对川中潼南地区须家河组二段进行高分辨率层序地层学研究。 在识别不同级别层序界面和湖泛面类型的基础上,将须家河组二段划分为 2 个中期基准面旋回层序(MSC)、4 个短期基准面旋回层序(SSC)。 在短期基准面旋回层序中进一步识别出向上“变深”的非对称型(A 型)、向上“变深”复“变浅”的对称型(C 型)旋回层序 2 种结构类型。 以短期基准面旋回为时间单元,详细探讨了须家河组二段地质时期的古地理特征及演化,分析了主河道侧向迁移对沉积相展布的影响。

本文引用格式

陈可洋 , 杨微 , 吴清岭 , 范兴才 , 李来林 , 刘振宽 . 川中潼南地区须家河组二段高分辨率层序地层学研究[J]. 岩性油气藏, 2013 , 25(1) : 45 -50 . DOI: 10.3969/j.issn.1673-8926.2013.01.010

Abstract

Guided by the sedimentology and high resolution sequence stratigraphy theory, in combination with the data of outcrop profile, drilling core and well logging, this paper studied the high resolution sequence stratigraphy of the second member of Xujiahe Formation in the central Sichuan Basin. On the basis of recognition of different levels sequence interfaces and the types of lake flooding surface, Xujiahe Formation can be divided into two middle-term base level cyclical sequences (MSC) and four short-term base level cyclical sequences (SSC). Among the short-term base level cyclical sequences (SSC), we identified two cyclical structures, which are asymmetry form deepening upwards (A form) and symmetric form deepening upwards then getting shallow again(C form). Making the short-term base level cycle as the time unit, the ancient geographical characteristics and evolution of the second member of Xujiahe Formation were discussed in detail, and the influence of lateral migration of drainage line on the sedimentary facies was analyzed.

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